Sliding door closer



FIG. 1 is a perspective view of a sliding door closer showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a right side elevational view thereof.

The broken lines environment showing a door frame is for illustrative purpose only and forms no part of the claimed design. The brackets indicate the undetermined length of the sliding door closer. 

The ornamental design for a sliding door closer, as shown and described. 